(19)
(11) EP 1 244 170 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
06.05.2004 Bulletin 2004/19

(43) Date of publication A2:
25.09.2002 Bulletin 2002/39

(21) Application number: 02005913.5

(22) Date of filing: 14.03.2002
(51) International Patent Classification (IPC)7: H01M 10/50, H01M 10/40
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 21.03.2001 JP 2001080635
07.03.2002 JP 2002061485

(71) Applicant: NGK INSULATORS, LTD.
Nagoya-City, Aichi Prefecture 467-8530 (JP)

(72) Inventors:
  • Nemoto, Hiroshi
    Nagoya-city, Aichi-prefecture, 467-8530 (JP)
  • Kitoh, Kenshin
    Nagoya-city, Aichi-prefecture, 467-8530 (JP)

(74) Representative: Leson, Thomas Johannes Alois, Dipl.-Ing. 
Tiedtke-Bühling-Kinne & Partner GbR, TBK-Patent, Bavariaring 4
80336 München
80336 München (DE)

   


(54) Lithium secondary cell and lithium secondary cell connecting structure


(57) The present invention provides a lithium secondary cell including an inner electrode body impregnated with a non-aqueous electrolyte, made up of a positive electrode and a negative electrode wound or laminated together with a separator inserted in between, an cell case that contains the inner electrode body and an electrode cover that seals the inner electrode body provided with cell covers, external terminals and internal terminals. The lithium secondary cell is provided with a unit for cooling the electric current path. The lithium secondary cell is capable of preventing a lowering of performance and extending the service life by preventing heating of the lithium secondary cell and maintaining temperature within an adequate range.






Search report